Magneto-electric machine



(No Model.)

A. J. POTTER. MAGNETC ELECTRIC MACHINE.

Patented Peb. 6, 1894.

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UNITED STATES PATENT OFFICE.

ALwAED J. POTTER, OE NEw HARTFORD, NEW YORK MAGNETO-ELECTRIC MACHINE.

SPECIFICATION forming part of Letters 'Patent No. 514,241, datedFebruary 6, 1894.

Application filed J'une 15,1893. Serial No. 477,647. (No model.)

To all whom t may concern.:

Be it known that I ALwARD J. POTTER, of New Hartford, in the county ofOneida and State of New York, have invented certain new and usefulImprovements in Magneto- Electric Machines 3 and l do hereby declarethat the following is a full, clear, and exact description of theinvention, which willenable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the letters and figures of referencemarked thereon, which form part of this specification. My inventionrelates to electro magnetos.

In the drawings, Figure 1 shows aside view of a magneto having myimprovements. Fig. 2 shows an end view of the same. Fig. 3 shows theopposite end. Fig. 4 shows a section taken on line O-D of Fig. 1. Fig. 5shows a section taken on line A--B with a plan view of the parts belowthe line. Fig. 6 shows the armature removed with attached parts insection. Fig. 7 shows the means for securing the pole pieces and magnetotogether.

Referring more particularly to the reference numerals in a more specificdescription of the device, 1, 2 and 3 indicate horseshoe magnets, and attheir extremities attached to the pole pieces t and 5. The pole piecesare firmly secured to the magnet and the magnets secured together bya-pin or post e screw-threaded to engage the pole piece, and passingthrough recesses in the edges of the magnets 2 and 3 and through anopening in magnet 1. To the outer end of the post or pin .c is applied awasher and the pin is provided with an opening for a key or taper pin ywhich draws the parts firmly together. Between the pole pieces areintroduced the insulators 6 and 7 suitably secured in position andadapted to hold the pole pieces accurately with reference to each other.The pole pieces have their adjacent faces hollowed out forming acylindrical opening for the reception of the cylindrical armature 8. Thearmature is mounted on shaft 9 and is provided with coils as 10, 10substantially in the usual manner. On one end of the shaft 9 is provideda contact ring 11 insulated from the shaft byan insulating collar 12.From the contact collar 11 extends a wire 13 to which is attached oneend of each of the coils 10 as shown at 14. The opposite ends of thecoils 10 are attached to astud as shown at 15, which is in circuit withthe shaft 9. The armature shaft 9 has bearing at one end in au end frameplate 16. The end plate 16 has projecting ears 17, 17 which rest uponthe ends of the pole pieces f1 and 5. The pole pieces Lt and 5 arepreferably of cast iron or soft metal and the end piece 16 of brass. Theopposite end of the shaft 9 has bearing in a frame plate 1S secured uponthe end of the insulator G.

In the upper end of the frame plate 18 and strap end plate 16 upon theopposite ends of the device are j ournaled the main drivingshaft 19, anda supplemental shaft 20. On the shaft 19 is secured the main drivinggear 21 which meshes with pinion 22 secured on the end of the armatureshaft 9. There is also provided on the end of the shaft 19 a crank 23secured on the shaft by right-hand threaded screw contained in thesleeve 23, so that when the handle 23 is turned to the right it willscrew on, and when completely on will turn the shaft 19; but when thedevice is turned to the left or in the wrong direction, the han dle willscrew off. On the opposite end of the shaft 19 is secured a smallgearpinion 24: which meshes in a larger pinion 25 mounted on the shaft 2Oand rotating with the shaft. The bearing of the shaft 20 in theframeplate 18 is arranged to permit a slight vertical movement of theshaft, 20, with reference to the plate. l accomplish this by simplyproviding a slotted opening as shown at 26 to permit that end of theshaft 2O to play up and down, although their equivalent and morecomplicated means may be provided for accomplishing the same end. v

Adjacent to the gear or pinion 25 on the shaft 2O l secure a contactplate or disk 27, which when the device is not in use rests normallyupon the shank portion of the spring 28. The spring 28 is secured bymeans of suitable screw 29, or other device, upon the insulation 6, andto the same screw may be attached one of the circuit wires a. From itspoint of attachment to the insulation 6 the spring 2S bows upward in aposition adapted to be engaged by the disk or plate 27 and IOO thenceextends downward and engages with' the contact ring 11 on `the end ofthe armature shaft.

Within the bow of the magnet and adjacent to the end plate 16 isprovided a double armed spring 30 with an eye on one of the larmsadapted to engage the shaft 19 and having 1ts opposite arm bearing onthe shaft 20. B etween the arms, the spring laps around a pin 31 securedin the end plate 16.

At b is shown the other circuit wire.

Electro magnetos of the description herein 4shawn and described areusually used in circults wherein it is desired to cut the magneto outwhen not in use, and one of the objects of my Improvement and theconstruction here- 1n shown and described is to automatically cut themagneto into circuit when it is operated. Therefore, the operation ofthe device so far as the cut-out fis concerned, is as follows: When thecrank 23 is turned to rotate the wheel and shaft in the directionindicated by the arrow in Fig. 2, the armature of the magnet is rotatedto generate a current and at the same time the cog-wheel 24 engagingwlth the cog-wheel 25 raises it and the end of the shaft 2O and thecontact disk or plate 27 so that the contact plate is carried ont ofcontact with the spring 28. In eifecting this movement, the rotation ofthe shaft 20 is braked sufliciently by the pressure of the sprlng 20upon it to cause the movement just described when the gear 24 isrotated. When the movement ceases, the swinging end of the shaft 2Otogether with the plate 27 drop into their-normal position and establishthe circuit from wire a through the mechanism to the wire b, thuscutting out the armature. Vhen the device is in operation the circuitwill then be from the wire a through the spring 28, the contact ring 11,the armature, the end plate 16 and magnets to the wire b, or the reverseof this. The spring 30 while acting as a brake on the shaft 20 and theattached parts may also have a partially downward pressure which willtend to return the cut-out disk to 1ts normal position when themechanism is at rest. I ind that this magneto will develop a muchstronger current than magnetos of the same size constructed asheretofore, in common use, and as accurately constructed as this one,and I ascribe this eXtra force in whole or in part to the manner inwhich the end plate 16 engages upon the pole pieces at one end of themagneto only, although I may be in error as tothis. It is also evidentthat the construction can be varied and modified in numerous particularswithout departing from the equivalents of my invention.

fall back :into its normal position `when the rotation ceases,substantially as set forth.

- 2. In an electrical device, the combination of a shaft having a pinionmounted thereon, a vibrating shaft on which asecond pinion is mounted,engaging with the first pinion, a switching disk operating in unisonwith the Vibrating shaft whereby as the driving shaft is rotated in a..forward direction the vibrating shaft is moved to brake the circuitthrough the switching disk,'and when the movement ceases, the shaft anddisk will return to their normal positions and complete the circuit.

3.' In an electrical device, the combination` of a pinion mounted on arotating shaft, a

supplemental shaft vibrating at one end and carrying on the vibratingend a pinion engaging with the pinion of the driving shaft, a switchingdisk or plate also mounted on the supplemental shaft and engaging whenthe parts are at rest with contact plate or spring, and adapted to bemoved out of contact with it in the forward movement of the drivingpinion and allowed to return to its normal position and engage it whenthe movement ceases substantially as set forth.

4. The combination of an electrical apparatus, of a pinion 24, avibrating pinion 254 engaging with the pinion 24, a movable circuitmaking and breaking device connected with the pinion 25, and a brakingmechanism acting on the pinion 25 whereby the pinion 25 is raised andthe circuit making and breaking device operated by the forward movementof the pinion 24, and the parts are allowed to return to their normalpositions when the movement of the pinion 24 ceases,

ed on a shaft transversely to the arms ofv the armature an end plateextending between and engaging with the ends of the pole pieces at oneend only, and an end 0r bearing plate at the opposite end of the polepieces and insulated therefrom, the armature shaft having bearings inthe end plates, substantially as set forth.

6. The combination in a magneto electric machine of permanent magnets,pole pieces secured between the arms of the magnets a rotary armatureoperating between the pole pieces on a shaft transverse to the arms ofthe magnet, an end plate 16 engaging on the ends of the pole pieces atone end only and an end bearing plate 18 insulated from the pole piecesand located at the other end thereof, the armature shaft and drivingmechanism having bearings in the end plates, substantially as set forth.

7. The combination in a magneto electric IOO IIO

Io and an end or bearing plate 18 mounted on the insulation between thepole pieces at the other end of the pole pieces, the armature shafthaving bearing in the end plates, substantially as set forth.

In Witness whereof I have affixed my signar 5 ture in presence of twowitnesses.

ALWARD J. POTTER. Witnesses:

CHARLES G. IRISH, E. M. ROBINSON.

